16139870 has 8 divisors (see below), whose sum is σ = 29051784. Its totient is φ = 6455944.

The previous prime is 16139867. The next prime is 16139887. The reversal of 16139870 is 7893161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16139870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806984 + ... + 807003.

It is an arithmetic number, because the mean of its divisors is an integer number (3631473).

Almost surely, 2^16139870 is an apocalyptic number.

16139870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16139870 is a deficient number, since it is larger than the sum of its proper divisors (12911914).

16139870 is a wasteful number, since it uses less digits than its factorization.

16139870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613994.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 16139870 is about 4017.4457059181. The cubic root of 16139870 is about 252.7163521622.

The spelling of 16139870 in words is "sixteen million, one hundred thirty-nine thousand, eight hundred seventy".